Radiator dummy core



NOV- 24, 1931. N. WALKER ET A1.

RADIATOR DUMMY GORE Filed NOV. 5, 1928 2 Sheets-Sheet 1 y AV@ Aw y@ gg@ M@ n .fue 1M@ MMV Z mf d N. WALKER ET AL RADIATOR DUMMY CORE Nov. 24, 1931.

Filed Nov. 5, 1928 2 sheets-sheet 2 i we.; 0:9@

llllll'l llllll- Patented Nov. 24, 1931 vUNITIED STATES PATENT OFFICE NORMAN WALKER AND CHARLES H. LAKE, OF LOCKIORT, NEW YORK, ASSIGNORS T GENERAL MOTORSV CORPORATION, VOF DETROIT, MICHIGAN, A CORPORATION 0F DELAWARE RADIATOR DUMMY CORE Appnation med November 5, 192s. serial No. 317,416.

This invention relates to radiators and has particular reference to the radiators used on automotive vehicles.

Modern radiators on automotive vehicles f6 are extended well down between the side bars of the chassis frame, to improve the vehicles appearance and' to obtain the effect of depth to the radiator and although this depth is desirable from an appearance standpoint, it is nevertheless not necessary to increase the size of the radiator.A It is therefore now common ractice to use a dummy core below the regu ar yradiator core. This will give the effect desired and at the same time cheap- 5 en the construction for the reason that the dummy core is much cheaper to construct and as it per se forms no part of the actual cooling system, anV injury thereto will in no way affect the radiator system.

The invention is concerned with the construction of the dummy radiator which is placed beneath the radiator core of the engine. The core is constructed by taking a A sheet of flat metal and placing therein a plu- '25 rality of symmetrically and staggeredly arranged cuts or slits and then bending the sheet transversely of and at the ends of the cuts into a plurality of substantially U- l shaped continuous formations. The sheet is then again bent at right angles to the first bend and along the line of each series of cuts. In this second bending operation the sheet is bent back entirely upon itself and in its final form is honeycomb in shape and will give a honeycomb effect, in all respects similar to the honeycomb of the` usual radiator.

Behind the dummy radiator core there is mounted or positioned a plate having a plurality of indentations which are polygonal or diamond shaped. These indentations are preferably .suitably painted and one indentation appears behind each opening in the dummy honeycomb core. This will give a lighting effect as the rays from an oncoming vehicle strike the indentations in the rear plate. The painted indentations form a refiecting surface and the plate may therefore be termed a reflecting plate.

Referring to the drawings:

Fig. 1 shows the lower portion of the radiator of an automotive vehicle with the dummy core shown.

Fig. 2 is an enlarged detail view of a portion of the dummy core.

Fig. 8 is a section through Fig. 2.

Fio. 4 is an enlarged detail view of a portion of the dummy core.

Fig. 5 is a view of the fiat sheet used to form the dummy core and showing the symmetrically and staggeredly arranged slits or cu s.

Figs. 6 and'7 are sections on the lines 6-6 and 77 of Fig. 5.

Fig. 8 is a view of the plate in Fig. 5 but showing the plate bent along the lines of the ends of each series `of cuts.

Fig. 9 is a section on the line 9 9l of Fig. 8 and showing in side View the U-shaped formation of the bends.

Fig. 10 is a section on the line 10-10 of Fig. 8 and showing the plurality of continuous substantially U-shaped bends or formations.

Figs. 11 and 14 are views of successive steps in the formation of the core, the bending operation being continued at right angles to the first and along the lines of the cuts.

Figs. 12 and 18 are sections along the lines 12-12'and 13-13 of Fig. 11.

Figs. 15 and 16 are sections along the lines 15-15 and 15-16 of Fig. 14.

Fig. 17 is a view of the core after the bending operations have been completed.

Figs. 18 and 19 are respective sections on the lines 1818 and 19-19 of Fig. 17.

Referring to the drawings the numeral 2 indicates the conventional honeycomb radiator of an automotive vehicle, 4 the radiator shell, 6 the dummy core and 8 the cap covering the end of the crank shaft. At the rear of the dummy core 6 there is placed or mounted the reflecting plate 8 having the upper and lower flanges 10 and 12 respectively, and lateral iianges, not shown. The upper flange 11') serves asA a dividing or finishing strip between the two cores. The core 6 is secured in the reflecting plate in any suitable way and the plate in turn secured to the shell by means of the welded or riveted brackets 14 and securing means 16 passing through brackets and flanges.

The invention isparticularly concerned with the construction of the dummy core which is shown in detail in Figs. to 19, in-

' n elusive.`

Referring to Figs. 5 to 7 inclusive, use

made of a iiat sheet 18 which is provided with aplurality of symmetrically and stag'- 1 'geredly'arranged cuts or slrts20 as shown in Fig'. Att-er the sheet lhas/been lprovided with the cuts 2O it is bent by a suitable tool or in a suitable machine along alineA Vtollovv'- ing the lends oi each set voi cuts2l as shown in Fig. 8. rIhe finalfoim of the plate after it has received its Iirstfbendingoperation is shown in Figs. 8, 9 and l0., as is better seen in Fig. l0. The :origina-l iat plate -noW assumes a plurality of continuous substantially Y Ushaped Hformations indicated at The 4[sheet `is now given :itssecond operation and is bent upon itseltthrough substantially y180 degrees, successive -steps fin the bending beingshoivn iin-Figs. 1:1 to 16 inclusive. The lsheet isb'ent in alternatedirections v:as shown at 24 and 26, the folding being along theflon- .gritudinal liiiefof thefcuts.- lvvlhenthecore is f :iinallytolded it will appear ass'lioWninFigs.

vland ,17 to 19 inclusi-ve.

, Froinan examination.o'fethe enlarged view of the vfinal form -in 2l, it lwill be noted that the adjacent .U-shaped formationsv ot Fig. 9 havebeen bent into overlapping relai, tion to form thehone-ycomb opening 28. The

Vvarious honeycomb portions are held togethi er-b-y means of `the -uncut andfbent over portions 30. ,conforming to .the lbends at '24 and 26 and representing the portion of'the'fflat 46 sheet :between adjacent endsfot thegalined cuts 20. Y v

vThe reflecting I, plate `8 is indented Vor Y punched by afsuitable tool to provide la pluralityoitindentations 32 1which are polygonal -each 'honeycomb opening.

constructionsides, said plate having a plurality of indentations therein.

4. In a dummy radiator construction, a

' dummy core, and a light reflecting plate mounted in the rear of said core. Y l

5. In a radiator construction, a 'dummy vcore, a Aplate mounted ini-the rear of said core,

said ,plate having a plurality of light reiiecting indentations therein.Y Y f v, l 16. 'In y'arad'iator construction,` a vdummy honeycomb core, Ya plate mounted ito 'extend over the rear of said core, saidplateihaving aw'plurality of light reflecting indentations therein, one indentation at the rear of each "honeycomb opening.

7. v.Ina dummy honeycomb core construc- -tion rfor radiators, fa ,plate behind said yconstruction, said plate having'afpluralty off .polygonal indentations therein .adj acent said .core construction, vone .indentationfbehind -8.` vIn 'a dummy honeycomb lcore A,construction for vradiators, va v.plate .atthe .rearofsaid core construction, .langeson said plate yeinbracingzthecore construction sides, said plate having -a-pluralityoi polygonal indentations f therein. immediately behindthe core.

M '-Intestimony whereof we alriixour signatures, I A

LNQRMANWAIJKER. K ,CHARLES ordiamond shaped, as -best shown vin "Fig, 2. i

,These iindentation's are vrvso arranged thatV one Will appear behindeachfopening 28in .the

dummvfcore 6, as Vis best shown at theu'pper therein- 2.Y Ina dummy honeycombl core construction 'for radiators, a platebehind said con-v struction, 'said plate having a plurality of in'dentations therein, one indentation behind' each honeycomb opening.

3. Ina dummy core construction `or'radiators, a plate'at the rea-rot said core construction, flanges on said plate-embracing'the core ioo 

